Leader Accessories Waterproof Backpack Dry Bag Day Pack Roll-top 100% waterproof backpack | Floats safely if dropped in water Protects contents from dust, sand, dirt and water Breathable mesh shoulder straps, bottle holder on the both sides Comfortable back panel with air-flow design ;Padded shoulder straps and lumbar support Large front internal zip pocket for map Made of High Quality Marine Grade Waterproof Vinyl